**Maryland Education Standards**. Algebra is a study of the properties of operations on numbers. Algebra generalizes math by using symbols or letters to represent numbers. Read More...

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Evaluate Open SentencesWorksheet/Answer key

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MD.1.0. Knowledge of Algebra, Patterns, and Functions: Students will algebraically represent, model, analyze, or solve mathematical or real-world problems involving patterns or functional relationships.

1.B.1. Expressions, Equations, and Inequalities: Write and identify expressions.

1.B.1.a. Represent numeric quantities using operational symbols (+, - , x, / with no remainders) (Assessment limit: Use whole numbers (0 - 100)).

1.B.2. Expressions, Equations, and Inequalities: Identify, write, solve, and apply equations and inequalities.

1.B.2.a. Represent relationships using relational symbols (>, <, =) and operational symbols (+, -, x, / with no remainders) on either side (Assessment limit: Use operational symbols (+, -, x) and whole numbers (0 - 200)).

1.B.2.b. Find the unknown in an equation with one operation (Assessment limit: Use multiplication (x) and whole numbers (0 - 81)).

MD.7.0. Processes of Mathematics: Students demonstrate the processes of mathematics by making connections and applying reasoning to solve and to communicate their findings.

7.A.1. Problem solving: Apply a variety of concepts, processes, and skills to solve problems.

7.A.1.d. Apply a strategy, i.e., draw a picture, guess and check, finding a pattern, writing an equation.

7.C.1. Communication: Present mathematical ideas using words, symbols, visual displays, or technology.

7.C.1.a. Use multiple representations to express concepts or solutions.

7.C.1.d. Express solutions using concrete materials.

7.C.1.e. Express solutions using pictorial, tabular, graphical, or algebraic methods.

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